The invention relates to the technical field of forest cultivation, in particular to a method for transforming a pure Xinjiang poplar forest into a Xinjiang poplar and
robinia pseudoacacia mixed forest in an
arid region. The method comprises the following steps: performing inter-row
felling on a Xinjiang poplar forest stand with the
canopy density greater than 0.7, deeply digging planting furrows in a vacant land after
felling, complementarily planting
robinia pseudoacacia saplings which are cultivated by
seedling bags one year earlier in the planting furrows in an inter-row mixed manner, and when the ground
diameter of trunks of the
robinia pseudoacacia saplings reaches 3-4cm,
felling residual Xinjiang poplar in the forest, and reserving one Xinjiang poplar coppice
shoot. And performing conventional tending management until a stable populus bolleana and robinia pseudoacacia mixed forest is formed. According to the method, inter-row intermediate
cutting, staggered rotation
cutting and
afforestation are combined, the degenerated pure Xinjiang poplar forest is efficiently transformed into the mixed forest of different ages through a progressive method by utilizing the mutual promotion relation of forest trees and adopting
afforestation and tending and
trunk repairing measures in different time periods, so that the
protection forest in the
arid region continuously plays ecological benefits, water and
soil loss is reduced, and the economic benefit of the
arid region is increased. The
biodiversity is increased; and the forest stand is stabilized.